CAJ | 학술논문

对单DMD彩色视频显示系统中的颜色控制方法及其实现进行了深入研究。在简要分析三种DMD投影系统及空间灰度调制法、时间灰度调制法优缺点的基础上，提出了一种单DMD彩色视频显示系统方案，并着重分析了基于脉冲选通灰度调制的颜色控制方法：将帧周期均分为R、G、B时间段，并将各时间段等比例划分为各个位时间段，依据相应颜色分量灰度值控制DMD微镜的状态。由于DMD接收的是视频图像各像素的位平面数据，对图像灰度值到位平面数据的格式转换进行了详细分析。最后，依据DMD工作特点，给出了DMD操作控制时序。整个方案切实可行，可为系统实现提供理论依据。
대단DMD채색시빈현시계통중적안색공제방법급기실현진행료심입연구。재간요분석삼충DMD투영계통급공간회도조제법、시간회도조제법우결점적기출상，제출료일충단DMD채색시빈현시계통방안，병착중분석료기우맥충선통회도조제적안색공제방법：장정주기균분위R、G、B시간단，병장각시간단등비례화분위각개위시간단，의거상응안색분량회도치공제DMD미경적상태。유우DMD접수적시시빈도상각상소적위평면수거，대도상회도치도위평면수거적격식전환진행료상세분석。최후，의거DMD공작특점，급출료DMD조작공제시서。정개방안절실가행，가위계통실현제공이론의거。
The color controlling method and its realization of single DMD colorized video displaying system were studied in detail. Based on analyzing the advantages and shortcomings of three types of DMD projection system, spatial gray-level modulation and temporal gray-level modulation, one single DMD colorized video displaying system was proposed. The color controlling method based on pulse selection gray-level modulation was analyzed deeply. In this method, the frame-period was evenly divided into R, G, B section, and each of the R, G, B sections was divided proportionally to be some bit-time sections. In every bit-time section, the status of micromirror in DMD was controlled according to the bit value of corresponding pixel gray-level. Considering that the data sent to DMD was the bit-plane data of video pixels, the format conversion from image gray-value to bit-plane data was analyzed in detail. At last, considering the feature of DMD, the operating scheduling was given. The whole scheme is doable. The analysis could provide academic basis for the realization of the system.